## Magnetic fields and sources

OpenStax University Physics Vol II: Chapter 12

Packets

- magnetic forces - here

- magnetic sources - here

Videos - mostly worked problems from (apphysicslectures.com)

Magnetic description introduction - here

video O1: Force on a Charged Particle in a Magnetic Field.

video O2: Force of a Charged Particle in a Magnetic Field (part 2)

video O3: Force on a Charged Particle in a Magnetic Field (part 3)

video O4: Charged Particle Moving in a Straight-Line Through Both and Electric Field, E, and a Magnetic Field, B.

video O5: Force on a Current-Carrying Wire in a Magnetic Field. This video also includes the torque on a current-carrying loop positioned in a magnetic field.

video O6: Unit O Review (part 1).

video O7: Unit O Review (part 2).

video O8: Unit O Review (part 3).

video O9: Unit O Review (part 4).

video P1: The Direction of the Magentic Field Created by a Current-Carrying Wire and the Direction of the Magnetic Field Created by a Moving Charge

video P2: Calculating the Magnetic Field Strength Created by a Moving Charge

video P3: The Law of Biot-Savart or Calculating the Magnetic Field Strength due to an Infinitesimally Small Current-Carrying Segment of Wire.

video P4: An Application of the Law of Biot-Savart

video P5: An Introduction to Ampere's Law (part 1). Uses an understanding of Gauss's law to introduce Ampere's law.

video P6: An Introduction to Ampere's Law (part 2). Finishes the derivation of the equation that gives you the magnetic field strength a distance r away from a current carrying wire.

video P7: Applications of Ampere's Law (part 1). Applies Ampere's law to find the magnetic field strength inside of a wire that has a uniform current density.

video P8: Applications of Ampere's Law (part 2). Applies Ampere's law to a co-axial cable.

video P9: Applications of Ampere's Law (part 3). Applies Ampere's law to find the magnetic field strength inside a wire that has a non-uniform current density.

video P10: The Magnetic Field Near the Center of a Solenoid (part 1). Applies Ampere's law to find the equation for the magnetic field strength near the center of a current-carrying solenoid.

video P11: The Magnetic Field Near the Center of a Solenoid (part 2).

video P12: The Magnetic Field Due to Two Wires (Superposition of Magnetic Field Vectors)

video P13: Force of One Current-Carrying Wire on Another Current-Carrying Wire

video P14: The Magnetic Field Due to a Toroid

video P15: The Magnetic Field on the Axis of a Current-Carrying Circular Hoop

video P16: p. 1 Unit P Review: Sources of Magnetic Fields. You might want to pause the video each time a question is asked and try to get the answer on your own.

video P17: p. 2 Unit P Review: Sources of Magnetic Fields

Good problems to master (Halliday)

Chapter 29: 1E, 3E, 7E, 11P, 33E, 35E, 39E, 41E, 45P, 57, 59

Chapter 30: 1E, 3E, 7P, 17P, 19P, 23E, 27P, 31E, 35P, [solenoids not on AP test: 41E, 45P, 47P,]

Packets

- magnetic forces - here

- magnetic sources - here

Videos - mostly worked problems from (apphysicslectures.com)

Magnetic description introduction - here

**Magnetic Fields**video O1: Force on a Charged Particle in a Magnetic Field.

video O2: Force of a Charged Particle in a Magnetic Field (part 2)

video O3: Force on a Charged Particle in a Magnetic Field (part 3)

video O4: Charged Particle Moving in a Straight-Line Through Both and Electric Field, E, and a Magnetic Field, B.

video O5: Force on a Current-Carrying Wire in a Magnetic Field. This video also includes the torque on a current-carrying loop positioned in a magnetic field.

video O6: Unit O Review (part 1).

video O7: Unit O Review (part 2).

video O8: Unit O Review (part 3).

video O9: Unit O Review (part 4).

**Sources of Magnetic Fields**video P1: The Direction of the Magentic Field Created by a Current-Carrying Wire and the Direction of the Magnetic Field Created by a Moving Charge

video P2: Calculating the Magnetic Field Strength Created by a Moving Charge

video P3: The Law of Biot-Savart or Calculating the Magnetic Field Strength due to an Infinitesimally Small Current-Carrying Segment of Wire.

video P4: An Application of the Law of Biot-Savart

video P5: An Introduction to Ampere's Law (part 1). Uses an understanding of Gauss's law to introduce Ampere's law.

video P6: An Introduction to Ampere's Law (part 2). Finishes the derivation of the equation that gives you the magnetic field strength a distance r away from a current carrying wire.

video P7: Applications of Ampere's Law (part 1). Applies Ampere's law to find the magnetic field strength inside of a wire that has a uniform current density.

video P8: Applications of Ampere's Law (part 2). Applies Ampere's law to a co-axial cable.

video P9: Applications of Ampere's Law (part 3). Applies Ampere's law to find the magnetic field strength inside a wire that has a non-uniform current density.

video P10: The Magnetic Field Near the Center of a Solenoid (part 1). Applies Ampere's law to find the equation for the magnetic field strength near the center of a current-carrying solenoid.

video P11: The Magnetic Field Near the Center of a Solenoid (part 2).

video P12: The Magnetic Field Due to Two Wires (Superposition of Magnetic Field Vectors)

video P13: Force of One Current-Carrying Wire on Another Current-Carrying Wire

video P14: The Magnetic Field Due to a Toroid

video P15: The Magnetic Field on the Axis of a Current-Carrying Circular Hoop

video P16: p. 1 Unit P Review: Sources of Magnetic Fields. You might want to pause the video each time a question is asked and try to get the answer on your own.

video P17: p. 2 Unit P Review: Sources of Magnetic Fields

Good problems to master (Halliday)

Chapter 29: 1E, 3E, 7E, 11P, 33E, 35E, 39E, 41E, 45P, 57, 59

Chapter 30: 1E, 3E, 7P, 17P, 19P, 23E, 27P, 31E, 35P, [solenoids not on AP test: 41E, 45P, 47P,]